Te pokey CMC i te hanga pepa

Ko te CMC (carboxymethyl cellulose) i roto i te umanga hanga pepa he taapiri nui hei whakapai ake i te kounga me te mahi o te pepa. Ko te CMC he pūhui polymer wairewa-wai me te pai o nga ahuatanga whakatikatika pokey me te whai waahi nui ki te hanga pepa.

1. Nga ahuatanga taketake o CMC
Ko te CMC he hua o te cellulose, he mea hanga ma te tauhohe i te wahanga hydroxyl o te cellulose me te waikawa chloroacetic. He tino pai te wairewa me te kaha ki te whakatika i te pokey. Ka hangaia e te CMC he otinga kakariki i muri i te rewa i roto i te wai, ka tino whai hua ki nga momo tono ahumahi.

2. Ko te mahi a CMC i roto i te ahumahi pepa
I roto i te mahinga pepa, ko te CMC te nuinga o te whakamahi hei whakapiri, hei whakakaha me te whakapumau. Ko ana mahi ko:

2.1 Whakapai ake i te kaha o te pepa
Ka taea e CMC te whakarei ake i te whakakotahitanga me te awangawanga o te pepa, me te whakapai ake i te parenga roimata me te whakakopa i te pepa. Ko tana mahi he whakakaha ake i te pepa kia pakari ake, kia roa ake hoki ma te whakanui ake i te kaha hono i waenga i nga muka penupenu.

2.2 Whakapai ake i te kanapa me te maeneene o te mata o te pepa
Ka taea e te taapiri CMC te whakapai ake i te kounga o te mata o te pepa me te whakaeneene i te mata o te pepa. Ka taea e ia te whakakii i nga aputa i runga i te mata o te pepa me te whakaiti i te taratara o te mata o te pepa, na reira ka pai ake te kanapa me te urutau o te pepa.

2.3 Whakahaere i te pokey o te penupenu
I te wa o te mahi pepa, ka taea e CMC te whakahaere pai i te pokey o te penupenu me te whakarite i te rere me te rite o te penupenu. Ko te pokey tika ka awhina ki te tohatoha i te penupenu, te whakaheke i nga hapa pepa, me te pai ake o te whakaputa.

2.4 Whakapai ake i te pupuri wai o te penupenu
He pai te kaha pupuri wai a CMC ka taea te whakaiti i te mate wai o te penupenu i te wa o te mahi hangai. Ka taea e tenei te whakaiti i te paheketanga o te pepa me nga raruraru rereke ka puta i te wa o te whakamaroke, na reira ka pai ake te pumau o te pepa.

3. Whakaritenga o te pokey CMC
Ko te viscosity o te CMC he tawhā matua mo tona paanga ki te mahi pepa. E ai ki nga whakaritenga whakangao rereke, ka taea te whakarereke i te viscosity o te CMC ma te whakatika i tona kukū me te taumaha ngota. Ina koa:

3.1 Te paanga o te taumaha ngota
Ko te taumaha ngota o te CMC he paanga tika ki tona pokey. Ko te CMC he nui ake te taumaha ngota i te nuinga o te waa he nui ake te pokey, na reira ka whakamahia te CMC taumahatanga ngota teitei ki nga tono e hiahia ana kia nui te pokey. Ko te CMC te taumaha ngota iti he pai mo nga waa e hiahia ana kia iti ake te pokey.

3.2 Te paanga o te kukū otinga
Ko te kukū o te otinga CMC tetahi take nui e pa ana ki te pokey. Ko te tikanga, ko te teitei ake o te kukū o te otinga CMC, ko te nui ake o tona pokey. Na reira, i roto i te hanga tūturu, me whakatika te kukū otinga o CMC rite ki ngā whakaritenga motuhake ki te whakatutuki i te taumata pokey e hiahiatia ana.

4. Whakatupato mo te whakamahi CMC
A, no te whakamahi i te CMC i roto i te mahi hanga pepa, me tohu nga mea e whai ake nei:

4.1 Te ōwehenga tika
Ko te nui o te CMC kua taapirihia me whakarite kia rite ki nga whakaritenga motuhake o te pepa. Ki te nui rawa te taapiri, tera pea ka nui rawa te kiko o te penupenu ka pa ki te mahi whakaputa; ki te kore e ranea, kare pea e tutuki te hua e tumanakohia ana.

4.2 Te whakahaere tukanga whakakore
Me rewa te CMC ki te wai matao kia kore ai e pakaru i te wa whakamahana. Me tino whakakorikorihia te tukanga whakakore kia tino rewa te CMC me te karo i te whakahiatotanga.

4.3 Te painga o te uara pH
Ko te mahinga o te CMC ka pangia e te uara pH. I roto i te hanga pepa, me pupuri te awhe pH e tika ana hei whakarite i te painga pai o te CMC.

Ka whai waahi nui a CMC ki te umanga hanga pepa, a, ko tana kaha ki te whakatikatika i te kirikiri ka pa ki te kounga me te mahi o te pepa. Ma te whiriwhiri tika me te whakamahi i te CMC, ka tino pai ake te kaha, te kanapa, te maeneene me te pai o te whakaputa pepa. Heoi, i roto i te tono tūturu, te kukū me te pokey o CMC Me ki kia ïa whakaritea rite ki ngā whakaritenga hanga motuhake ki te whakarite i tona pānga pai.